README.md

malloc

The malloc project is about writing a dynamic allocation memory management library. So you can use it with some programs already in use without modifying them or recom-piling by the following libc functions malloc(3), free(3) and realloc(3).

functions

• The malloc() function allocates "size" bytes of memory and returns a pointer to theallocated memory.
• The realloc() function tries to change the size of the allocation pointed to by "ptr" to "size", and returns "ptr". If there is not enough room to enlarge the memoryallocation pointed to by ptr, realloc() creates a new allocation, copies as much ofthe old data pointed by "ptr" as will fit to the new allocation, frees the old allocation, and returns a pointer to the allocated memory.
• The free() function deallocates the memory allocation pointed to by "ptr". If "ptr" is a NULL pointer, no operation is performed.
• The show_alloc_mem() function show visual state of the allocated memory zones.

Functions are prototyped as follow:

void    *malloc(size_t size);
void    *realloc(void *ptr, size_t size);
void    free(void *ptr);
void    show_alloc_mem();

Compilation

Compile and create the dynamic library: make

The dynamic library will be named: libft_malloc_$HOSTTYPE.so and $HOSTTYPE will be set at 'name -m'_'uname -s' if the environment variable is empty. Anyway there will be a link libft_malloc.so that will link with the previous file.

Execute

Compile your executable you want to launch separetly, then to launch it with this library you can use one of the run_file (run_linux.sh or run_mac.sh) in the run_scripts folder as follow: ./run_scripts/run_X.sh ./your_executable or you can tape the instructions that are on the run file separatly, then launch your program.

Tests

Defense testing

Compilation

To compile all the files as asked during the defense you can launch commands as follow:

gcc -o test0 tests/test0.c
gcc -o test1 tests/test1.c
gcc -o test2 tests/test2.c
gcc -o test3_0 tests/test3_0.c
gcc -o test3_1 tests/test3_1.c
gcc -o test4 tests/test4.c
gcc -o test5 tests/test5.c -L. -lft_malloc

Execute

On execution during the defense you can launch commands as follow:

# on Mac
/usr/bin/time -l ./testX
./run_scripts/run_mac.sh /usr/bin/time -l ./testX
# on Linux
/usr/bin/time -v ./testX
./run_scripts/run_linux.sh /usr/bin/time -v ./testX